The accepted answer to How can I format as keyboard keys? says that you just need to use the
<kbd> tag. This is no longer true, at least on Meta, which is pointed out by another answerer (and to be fair, that second answer got more than double the upvotes of the first). But the OP for the question, as of this writing, hasn't been seen in half a year.
I have little hope that the OP will ever return to the question to change the accepted marker. What should we do about this question and hypothetical others like it? Mark for mod attention? Downvote the accepted answer? Just leave it as it is?